[Intel-gfx] [PATCH 23/23] drm/i915/mtl: Do not update GV point, mask value

[Radhakrishna Sripada]

No need to update mask value/restrict because
"Pcode only wants to use GV bandwidth value, not the mask value."
for Display version greater than 14.

Bspec: 646365
Cc: Matt Roper <matthew.d.roper at intel.com>
Original Author: Caz Yokoyama
Signed-off-by: Radhakrishna Sripada <radhakrishna.sripada at intel.com>
---
 drivers/gpu/drm/i915/intel_pm.c | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index d73be4bbaaa3..c9250d849e35 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -3924,6 +3924,14 @@ void intel_sagv_pre_plane_update(struct intel_atomic_state *state)
 {
 	struct drm_i915_private *i915 = to_i915(state->base.dev);
 
+	/*
+	 * No need to update mask value/restrict because
+	 * "Pcode only wants to use GV bandwidth value, not the mask value."
+	 * for DISPLAY_VER() >= 14.
+	 */
+	if (DISPLAY_VER(i915) >= 14)
+		return;
+
 	/*
 	 * Just return if we can't control SAGV or don't have it.
 	 * This is different from situation when we have SAGV but just can't
@@ -3944,6 +3952,16 @@ void intel_sagv_post_plane_update(struct intel_atomic_state *state)
 {
 	struct drm_i915_private *i915 = to_i915(state->base.dev);
 
+	/*
+	 * No need to update mask value/restrict because
+	 * "Pcode only wants to use GV bandwidth value, not the mask value."
+	 * for DISPLAY_VER() >= 14.
+	 *
+	 * GV bandwidth will be set by intel_pmdemand_post_plane_update()
+	 */
+	if (DISPLAY_VER(i915) >= 14)
+		return;
+
 	/*
 	 * Just return if we can't control SAGV or don't have it.
 	 * This is different from situation when we have SAGV but just can't
-- 
2.25.1